Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0BTO callsign genealogy
Currently held by GRIER, DOUGLAS C
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KC0BTO's current licensee, walking backwards.
- N4LRNcancelledcancelled 1997-07-29
Successor callsigns
Callsigns held now by people who previously held KC0BTO.
No current licensee on record previously held this callsign.